CVE-2024-3884

Undertow: outofmemory when parsing form data encoding with application/x-www-form-urlencoded

Published: Dec 3, 2025Updated: Sep 4, 2026 Sources: CVE List NVD GHSACWE-20

7.5HIGH

Description

A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-20

Affected Products

Red Hat

commercial·US

Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7On-prem

Enterprise Software

Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7On-prem

Operating Systems / linux-distro

Red Hat JBoss Enterprise Application Platform 7.4.24On-prem

Operating Systems / linux-distro

Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7On-prem

Enterprise Software / erp

Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8On-prem

Enterprise Software / erp

Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9On-prem

Enterprise Software / erp

Red Hat JBoss Enterprise Application Platform 8.0On-prem

Enterprise Software / erp

Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8On-premWeb App

Enterprise Software / itsm-monitoring

Maven

package-ecosystem

io.undertow:undertow-core

OSS Libraries

and 24 more affected products View all →

Exploitability

Official Patch Available

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

https://access.redhat.com/errata/RHSA-2026:0383

access.redhat.com

https://access.redhat.com/errata/RHSA-2026:0384

access.redhat.com

https://access.redhat.com/errata/RHSA-2026:0386

access.redhat.com

and 26 more references View all →

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